Fix JSON unmarshalling breaking on XML arrays being rendered as objects

Due to a problem in the upstream goxml2json repo, I had to switch to a
fork that allowed me to specify which children should be forcefully
rendered as arrays, as some in some instances the AEMET's XML would
contain completely individual values that are usually arrays, resulting
in the JSON translator interpreting them as objects instead of arrays.

The amount of effort I had to put into fixing this problem was
mind-boggling.

cmd/clientFunc.go

@@ -2,7 +2,7 @@ package cmd
 
 import (
 	"fmt"
-	xj "github.com/basgys/goxml2json"
+	xj "github.com/riccardomanfrin/goxml2json"
 	"io"
 	"net/http"
 	"strings"
@@ -15,28 +15,43 @@ type root struct {
 			Dia []struct {
 				Fecha string `json:"-fecha"`
 				UV    string `json:"uv_max"`
+
 				Temperatura struct {
 					Maxima string `json:"maxima"`
 					Minima string `json:"minima"`
 					Dato   []struct {
 						Valor string `json:"#content"`
 						Hora  string `json:"-hora"`
-					}
+					} `json:"dato"`
-				}
+				} `json:"temperatura"`
+
 				Sens_Termica struct {
 					Maxima string `json:"maxima"`
 					Minima string `json:"minima"`
 					Dato   []struct {
 						Valor string `json:"#content"`
 						Hora  string `json:"-hora"`
-					}
+					} `json:"dato"`
-				}
+				} `json:"sens_termica"`
+
 				Humedad_Relativa struct {
 					Maxima string `json:"maxima"`
 					Minima string `json:"minima"`
-				}
+				} `json:"humedad_relativa"`
-			}
+
-		}
+				Estado_Cielo []struct {
+					Test        string `json:"#content"`
+					Periodo     string `json:"-periodo"`
+					Descripcion string `json:"-descripcion"`
+				} `json:"estado_cielo"`
+
+				// Prob_Precipitacion []struct {
+				// 	Probabilidad string `json:"#content"`
+				// 	Periodo      string `json:"-periodo"`
+				// } `json:"prob_precipitacion"`
+
+			} `json:"dia"`
+		} `json:"prediccion"`
 	} `json:"root"`
 }
 
@@ -87,7 +102,12 @@ func getJSON(codPostal string) (s string, err error) {
 	}
 
 	xml := strings.NewReader(string(data))
-	json, err := xj.Convert(xml)
+
+	// I am in tremendous pain after what I had to go through to get this damn thing working,
+	json, err := xj.Convert(xml, xj.WithNodes(
+		xj.NodePlugin("root.prediccion.dia.estado_cielo", xj.ToArray()),
+	))
+
 	if err != nil {
 		e := fmt.Errorf("Error occurred converting XML to JSON: %v\n", err)
 		return "", e

cmd/serverFunc.go

@@ -12,18 +12,19 @@ var (
 	localidades        = map[string]string{
 		"valencia":  "46250",
 		"madrid":    "28079",
+		"barcelona": "08019",
 	}
 )
 
 func server() {
 	router := gin.Default()
-	router.GET("/api/:codigopostal", returnWeather)
+	router.GET("/api/:localidad", returnWeather)
 	fmt.Printf("Listening on port %v...\n", listenPort)
 	router.Run(":" + listenPort)
 }
 
 func returnWeather(c *gin.Context) {
-	codPostal := c.Param("codigopostal")
+	codPostal := c.Param("localidad")
 	isAvailable := false
 	for k := range localidades {
 		if codPostal == k {
@@ -46,6 +47,7 @@ func returnWeather(c *gin.Context) {
 	if err != nil {
 		e := fmt.Sprintf("Error occurred unmarshalling data: %v\n", err)
 		c.String(http.StatusInternalServerError, e)
+		return
 	}
 
 	c.IndentedJSON(http.StatusOK, aemetRequest)